Heater.



H. 3. BROMLEY & A. R. MARSHALL.

HEATER.

APPLICATION FILED NOV. 7, 1908.

Patented Sept. 14, 1909.

oooooocpoooooo UNITED T E PATENT onn o HARRY R. BROMLEY AND ARTHUR RAYMOND MARSHALL, 0F PITTSBURG, PENNSYLVANIA.

HEATER.

Specification of Letters Patent.

To all whom it may concern: v

Be it known that we, HARRY R. BROMLEY and ARTHUR RAYMOND MARSHALL, citizens of the United States, residing at Pittsburg in the county of Allegheny and State 0 similar construction for the purpose of heating the fluid passing through heating coils. It has for its object to provide a simple compact construction of high eflicien'cy for utilizing the full amount of the gas or other heating fuel employed; exposing the circulating coil to the heating effect within a casing and in combination with an inner deflecting ,element adapted to cause circulation of the gases in intimate contact with the coil pipes; means whereby the device may be readily installed and the casing removed; and to various other features of-construction and improvement as shall be more fully hereinafter described.

Referring to the drawings: Figure 1 represents a vertical sectional longitudinal viewindicated by the line I. I. of Fig. 2. Fig.2

is a transverse sectional view indicated by the line II. II. of Fig. 1. Fig. 3 is a horizontal sectional view indicated by the line III. III. of Fig. 1. Fig. 4 illustrates in plan, a fragment of the lower tubes, their coupling inlet connection, and water supply pipe. Fig. 5 is a sectional detail-view showing a modified construction of easing. In apparatus for heating water, for which the present invention is particularly adapted, it is desirable to pass the water through the circulating coil in intimate contact with the products of the fuel in combustion, to so construct the coil that it may be cheaply manufactured, parts may be readily renewed or inspected, and whereby itmay be constructed of commercial sections and connections readily available.

. In carrying out our invention we have so constructed the coils that they are composed e-f sections 2 of straight pipe ,or tubing arably provided with a contr 'is ordinarily sufficient.

ranged in two series or banks diverging upwardly and outwardly toward the top, the tubes 2 at each side being substantially parallel and on the same horizontal level with each other. The tubes 2 of the lower pair are connected by a U coupling 3 having a central inlet connection 4, into which is screwed the common supply pipe 5, prefero ling valve as shown. If desired any other form [of coupling may be designed .to providev the twin outlet openings and the single inlet opening, which does not necessarily have to be located midway of the outlet openings as shown, and as will be readily understood.

The series of tubes 2 are flaringly arranged in banks at each side of a central wedge shaped deflector which may conveniently be made of sheet or cast metal having outer walls 7 7, arranged at any desire angle, and substantially parallel with the diverging banks of tubes 2, terminating in a lower edge as shown and extending upwardly substantially coextensive wit the height of the said banks at each side. The upper tubes 2 are connected at either side of the apparatus, but preferably at the same side as the lower pair, by a coupling 8 similar to coupling 3 having twin connections for the incoming water and a common outlet connection 9 for the common delivery pipe 10 which may if desired be also provided with a controlling valve, although one valve As shown, the series of tubes 2 are connected at their ends by U couplings 11, and as thus arranged at each side the diverging banks or'series may be extended to any desired height and when connected for inlet and outlet, will provide circulation through both sides of the water to be heated. I

12 represents an outer surroundin shell of sheet or cast metal orother suitab e material composed of ends 13 and 13', the upwardly diverging sides corresponding generally to the slope of the banks of tubes and embodying a covering top 14, and a base; the top being relatively wider than the base depending on the angularity and height. The casing as thus constructed is preferably separable and the sides and end 13 are for Patented se e. 1a, 1909..

such purpose made in one piece having a slip joint connection 15 with end 13, or connected with it any suitable manner to forming part of a gas supply pipe 17 preferably extending through end wall 13. The burner may be supported within the casing by suitable brackets 18, 19, while the lower. portion of the casing is provided with one or more air inlet openings 20 to facilitate combustion.

For the purpose of deflecting the products of combustion inwardlytoward each successive pipe 2 and for causing a complete circulation around the pipes and intimate contact therewith, the inner faces of the side walls of,casing 12 are preferably provideda with inwardly extending longitudinal rid es or abutments 21 of asbestos or other suita 1e material, or the sides of the casing may be longitudinally corrugated as indicated at 21v in i 5. By. this construction it will be seen t at the gases of combustion passing upwardly from the burner will be constantly deflected inwardly by such abutments toward pipes 2, while the inner sloping walls 7 will also constantly tend to deflect the gases outwardly toward the. ipes, so that as the gases circulate upwar y through the.

space between the outer walls of the casin and the inner deflecting walls 7., they w" act upon each coil successively,'finally emerg ing into the upper space 22 of the casing and I be carried off through a suitable outlet ipe 23. As thus constructed and arrange it 'will be seen that the heat of the fuel will heat the water within the-lower coils, causing upward circulation and successive heating in the upper coils, whereby with a minimum of fue the highest possible deree' of heat may be secured, utilizing the cat units practically to exhaustion. This is due to the arrangement of the circulating tubes and the inner and outer deflecting walls. I I

The advanta es of the invention will be readily appreclated by all those familiar with the class of water heaters. It is economical of installation and operation, may be used for domestic heating at low fuel cost, is not readily liable to get out oforder, may be used with any suitable fuel supply, i y

and is composed of parts which are rea available and can be easily and quickly repaired. i l

The invention may be'utilized in different sizes or amplified n various features and details by .the skilled mechanic, but all such esas'ze 'changesare to be considered as within the scope of the following claims:

What we claim is 1 l. A heater having an upwardly and outwardly diverging connected series of straight circulating pipes, straight inner and outer walls conforming to the plane of the pipes, and means for circulating fuel in combustion around said pipes within said walls, substantially as set forth.

2. A heater having an upwardly and outwardly diverging connected series of flaringly' arranged straight circulating pipes, strai ht inner and outer walls conformlng to the aringly plane of the pipes, and means for circulating fuel in combustion around said pipes within said walls,.substantially as set forth.

8; A heater comprising a plurality of divergently arranged series of straight circulating pipes havlng common inlet and outlet openmgs, straight interior and exterior walls conforming to the slope of said series of circulating pipes, and meansfor introducing fuel in combustion between said walls and in contact with said pipes, substantially as setforth. y

4. A heater comprising a plurality of divergently arranged series of straight circulating pipes having common inlet and outlet openings, straight interior and exterior walls conforming to the slope of said series of circulating pipes,'said outer walls having inner longitudlnal deflecting abutments,.and means for introducin fuel in combustion between said walls an in contact with said pipes, substantially as set forth.

5: In a heater, the combination of an in? ner straight wedge-shaped deflector, series of straight circulating pipes arranged in banks at each side thereof and having common inlet andoutlet connections, a surrounding rectangular casing divergently arranged at each side of said pipes, aheater below said tubes,'and means for'carrying off the products of combustion,substant1ally as setorth.

6. In a heater, the combination of'an inner strai ht wed e-shaped deflector, series of straig t circu ating pipes arranged in banks at each side thereof and havingcommon inlet and outlet connections, ,a' surrounding rectangular ca sin divergently arranged at each side of sai tubes having a longitudinally corrugated deflecting surface, a heater below said pipes, and means for carrying oil the products of combustion,-

substantially as set forth.

7. In a heater, the combination of an' outer rectan lar casing having upwardly and outward yldiverging walls and a fixed and a removable end and longitudinaldeflecting abutments, an inner rectangular wedge-shaped deflector conforming to the planes of the outer Walls with an intervening space, series of straight circulating pipes having inlet and outlet connections and arranged at each side of said deflector and vertically between said abutments, a heater below said pipes, and means for carrying 01f "the products of combustion, substantially as set forth.

I11 testimony whereof We affix our signatures in presence of two wltnesses.

HARRY R. BROMLEY. ARTHUR RAYMOND MARSHALL.

Witnesses C. M. CLARKE, CHAS. S. LEPL'EY. 

